<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .tj{
            text-align: center;
        }
        #tableData{
            margin: 0px auto;
            width: 500px;
        }
    </style>
</head>
<body>
    <p class="tj">
        学生姓名：<input type="text" id="xm"/>
        年级：<select id="nj">
                <option value="-1">--请输入--</option>
                <option value="一年级">一年级</option>
                <option value="二年级">二年级</option>
              </select>
        <input type="button" value="查询" id="search"/>
    </p>
    <table id="tableData" border="1">
        <tr>
            <th>学号</th>
            <th>姓名</th>
            <th>年级</th>
        </tr>
        <tbody id="sj">
            <!--
            <tr>
                <td>XXX</td>
                <td>XXX</td>
                <td>XXX</td>
            </tr>
            -->
        </tbody>
    </table>

    <script type="text/javascript" src="js/demoClient.js"></script>
</body>
</html>